Swifties are surely going to have their panties in a bunch after this…

One Direction’s Harry Styles reportedly has no problem spilling the beans on his former ladyloves, including the one and only Taylor Swift, in the upcoming documentary One Direction: This Is Us. And according to him, Tay Tay is one “pain in the arse.” OUCH!

As if the name calling wasn't enough, Harry apparently goes on to reveal he's actually NEVER been in a serious relationship before, saying: